atpl/oxford/met/ch2 Flashcards

1
Q

The barometric Pressure at the airfield datum point is known as:

A

QFE

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2
Q

The instrument that gives a continuous printed reading and record of the atmospheric pressure is:

A

barograph

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3
Q

The pressure of the atmosphere:

A

decreases at a decreasing rate as height increases

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4
Q

When considering the actual tropopause which statement is correct:

A

it is low over the poles and high over the equator

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5
Q

Atmospheric pressure may be defined as:

A

the force per unit area exerted by the atmosphere on any surface with which it is in contact

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6
Q

The QFF is the atmospheric pressure:

A

at a place where the reading is taken corrected to MSL taking into account the prevailing temperature conditio

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7
Q

The pressure of 1013.25 hPa is known as::

A

standard pressure setting

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8
Q

The aircraft altimeter will read zero at aerodrome level with which pressure setting set on the altimeter sub scale:

A

QFE

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9
Q

The aerodrome QFE is:

A

the aerodrome barometric pressure.

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10
Q

When an altimeter sub scale is set to the aerodrome QFE, the altimeter reads:

A

zero at the aerodrome reference point

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11
Q

The aerodrome QNH is the aerodrome barometric pressure:

A

corrected to mean sea level assuming standard atmospheric conditions exist

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12
Q

A line drawn on a chart joining places having the same barometric pressure at the same level and at the same time is:

A

an isobar

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13
Q

An isobar on a meteorological chart joins all places having the same:

A

QFF

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14
Q

Pressure will _________ with increase of height and will be about __________ at 10000 ft and ___________ - at 30000 ft.

A

Decrease/ 700 mb/ 300 mb

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15
Q

An airfield in England is 100m above sea level, QFF is 1030 hPa, temperature at the surface is -15°C. What is the value of QNH?

A

Less than 1030 hPa

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